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Intangible Assets, Net
 6 Months Ended
Jun. 30, 2013
Intangible Assets, Net  
Intangible Assets, Net [Text Block]
Intangible Assets, Net
Intangible assets, net, as of June 30, 2013 and December 31, 2012 consisted of the following (in thousands):
 
June 30, 2013
 
December 31, 2012
 
Carrying Amount
 
Accumulated Amortization
 
Net Carrying Amount
 
Carrying Amount
 
Accumulated Amortization
 
Net Carrying Amount
Trademarks
$
1,890

 
$
(911
)
 
$
979

 
$
1,890

 
$
(637
)
 
$
1,253

Proprietary data and models
1,500

 
(449
)
 
1,051

 
1,500

 
(264
)
 
1,236

Developed technology
728

 
(502
)
 
226

 
728

 
(380
)
 
348

Covenant not to compete
480

 
(354
)
 
126

 
480

 
(222
)
 
258

Customer relationships
250

 
(174
)
 
76

 
250

 
(132
)
 
118

Other intangible assets
1,450

 
(1,450
)
 
—

 
1,450

 
(1,450
)
 
—

Intangible assets in-progress
—

 
—

 
—

 
13

 
—

 
13

Total intangible assets, net
$
6,298

 
$
(3,840
)
 
$
2,458

 
$
6,311

 
$
(3,085
)
 
$
3,226



The estimated future amortization expenses for intangible assets are summarized below (in thousands):
2013 (remainder)
$
739

2014
906

2015
625

2016
188

Total estimated future amortization expense
$
2,458



Amortization expense was $0.4 million for both the three months ended June 30, 2013 and 2012, and $0.8 million and $0.7 million for the six months ended June 30, 2013 and 2012, respectively.